These are Ralf S. Engelschall's FreeBSD system utilities which
automate common tasks: freebsd-irqs for showing a concise
summary table derived from dmesg(8) of IRQ assignments after booting
(useful during building up a new PC) and freebsd-memory for
showing a precise memory usage summary table during run-time (useful
for figuring out total system memory consumption during high loads).
The tarball can be found here.